> From: Calvin <tgo@CHIH1.TELMEX.NET.MX>
>
> In a not too old issue of Electronic Design, there was a very interesting
> design of a pulse meter, that used the LED-SENSOR pair principle, and had
a
> brief but good explanation of the theory behind it. One of the nice
things
> about this design was that it had an analog output, and a digital one.
>
> If anyone is interested I can dig the mag, and let you know the exact
issue
> and page.
 I'm interesting.

Alex Torres, Kharkov, Ukraine (exUSSR)
altor@chat.ru
2:461/28 FidoNet
http://www.geocities.com/SiliconValley/Lab/6311